CN104888700A - Formaldehyde adsorbent and preparation method thereof - Google Patents

Abstract

The invention discloses a formaldehyde adsorbent and its preparation method. The formaldehyde adsorbent is characterized by being prepared from the following raw materials, by weight, 10-15 parts of calcium carbonate fiber, 10-15 parts of ferriferrous oxide magnetic powder, 20-40 parts of tetrabutyl titanate, 3-5 parts of silica sol, 6-8 parts of calcium aluminate, 60-80 parts of volcanic rock, 1-2 parts of ammonium bicarbonate, 10-15 parts of scindapsus aureus, 5-8 parts of coal slag and a proper amount of deionized water. By combination of the added scindapsus aureus and coal slag, the adsorbent has a good using effect, has fast formaldehyde adsorption speed, has a good adsorption effect, and is green and environmentally friendly. The prepared adsorbent has a good adsorption effect on various pollutants, especially has a good adsorption effect on formaldehyde and has a good reuse effect. The preparation method is simple, has strong operationality, is low-cost and is worthy of popularization.

Description

A kind of formaldehyde adsorbent and preparation method thereof

Technical field

the present invention relates to a kind of absorbent fields, be specifically related to a kind of formaldehyde adsorbent and preparation method thereof and preparation method thereof.

Background technology

Formaldehyde is considered to the class suspect carcinogen ranked the first in indoor pollution always, usually decoration, finishing material, furniture and coating etc. are derived from, especially be very with coating, artificial board, artificial board comprises face artificial board, glued board, particieboard, fiberboard, composite floor board etc., they use phenolic aldehyde, Lauxite and adhesive containing formaldehyde in process of production, adhesive is mostly containing air aldehyde resin, so have good living environment in order to ensure people, the content reducing indoor formaldehyde is the cardinal task of a most important thing.

Volcanic rock quality is hard as lithotome, coating surface honeycomb porous, specific area is large, and soak change without exception in water, water proofing property is splendid, fire prevention, weather resisteant is good, can prevent the deterioration caused because of ultraviolet, have nontoxic, tasteless, intensity is high, heat insulation, acid and alkali-resistance, stain resistance, corrosion-resistant, resistance toly to go mouldy, and the advantage such as pollution-free, "dead", as sorbent material, there is good application prospect.Although adsorption rate and adsorption capacity are improved at present, but absorption after adsorbent and solvent not easily separated, the present invention adds magnetic material in sorbent material makes adsorbent can be good at being separated, and carries out recycling effective, expands the range of application of adsorbent.

Summary of the invention

The object of this invention is to provide a kind of formaldehyde adsorbent and preparation method thereof and preparation method thereof.

In order to realize object of the present invention, the present invention is by following scheme implementation:

A kind of formaldehyde adsorbent and preparation method thereof, is made up of the raw material of following weight portion: calcium carbonate fiber 8-15, butyl titanate 20-40, Ludox 3-5, calcium aluminate 6-8, volcanic rock 60-80, PA6 nylon powder 6-9, gelatin 3-4, carbonic hydroammonium 1-3, epipremnum aureum ground-slag 10-15, coal-fired slag 5-8, deionized water are appropriate;

A kind of formaldehyde adsorbent of the present invention and preparation method thereof, be made up of following concrete steps:

(1) absolute ethyl alcohol of butyl titanate and 3-4 times amount is mixed, magnetic agitation 1h, magnetic agitation 2h is continued again by being added in above-mentioned solution after short for calcium carbonate fiber cutting, slow dropping deionized water, continue after gel to be formed to stir 0.5-1 hour, then to be added in baking oven that under 80 ° of C, to dry grinding for subsequent use;

(2) spend deionized water after volcanic rock being soaked 12h in concentrated sulfuric acid and grind to form fine powder to neutral oven dry, then mix with gelatin, PA6 nylon powder, in Muffle furnace, under 240-255 ° of C, calcine 0.5-1h, take out after cooling;

(3) by the product of step (1) gained and except calcium aluminate all the other remaining material mixing and stirring, employing pressure is that mixture is pressed into bead by the ball press of 10t-20t, selects particle size for subsequent use as ball core at the bead of 5-15mm scope after screening;

(4) product of step (2) gained and calcium aluminate are mixed, the bead of step (3) gained is placed in disc balling machine as kernel, add above-mentioned volcanic rock mixture, rolling pelletizing, volcanic rock is covered on ball core and forms shell, the composite sphere of gained is calcined under 550-600 ° of C 2-4h and become porous complex microsphere.

Advantage of the present invention is: the present invention adopts calcium carbonate fiber to mix with TiO 2 sol, enhance the intensity of TiO 2 sol, bactericidal properties, the performance of the aspect such as adsorbance and heat resistance, adopt gelatin and PA6 to be added to define skeleton when calcining in volcanic rock and make Adhesion enhancement between volcanic rock, not easily be scattered when making adsorbent dry linting, wearability strengthens, extend service life, and double-layer porous road adsorption microspheres made by adsorbent by the present invention, enhance adsorption capacity and adsorption rate, to tiny field trash, there is good adsorption effect, expand adsorption range, add epipremnum aureum and coal-fired slag collocation result of use good, PARA FORMALDEHYDE PRILLS(91,95) adsorption rate is fast, advantages of good adsorption effect, environmental protection, adsorbent prepared by the present invention has good adsorption effect to various pollutant, especially the adsorption effect of PARA FORMALDEHYDE PRILLS(91,95) is high, reuse effective, preparation method is simple, workable, cost is low, be worthy to be popularized.

Detailed description of the invention

Below by instantiation, the present invention is described in detail.

A kind of formaldehyde adsorbent and preparation method thereof, is made up of the raw material of following weight portion (kilogram): calcium carbonate fiber 12, butyl titanate 34, Ludox 4, calcium aluminate 7, volcanic rock 76, PA6 nylon powder 8, gelatin 3, carbonic hydroammonium 2, epipremnum aureum ground-slag 13, coal-fired slag 7, deionized water are appropriate;

A kind of formaldehyde adsorbent of the present invention and preparation method thereof, be made up of following concrete steps:

(1) absolute ethyl alcohol of butyl titanate and 3 times amount is mixed, magnetic agitation 1h, continuing magnetic agitation 2h again by being added in above-mentioned solution after short for calcium carbonate fiber cutting, slowly dripping deionized water, continue stirring after gel to be formed 0.6 hour, then to be added in baking oven that under 80 ° of C, to dry grinding for subsequent use;

(2) spend deionized water after volcanic rock being soaked 12h in concentrated sulfuric acid and grind to form fine powder to neutral oven dry, then mix with gelatin, PA6 nylon powder, in Muffle furnace, under 250 ° of C, calcine 1h, take out after cooling;

(3) by the product of step (1) gained and except calcium aluminate all the other remaining material mixing and stirring, adopt pressure to be that mixture is pressed into bead by the ball press of 20t, select particle size after screening for subsequent use as ball core at the bead of 5-15mm scope;

(4) product of step (2) gained and calcium aluminate are mixed, the bead of step (3) gained is placed in disc balling machine as kernel, add above-mentioned volcanic rock mixture, rolling pelletizing, volcanic rock is covered on ball core and forms shell, the composite sphere of gained is calcined under 550 ° of C 3h and become porous complex microsphere.

Example 0.5g adsorbent and mass concentration are that the methylene blue solution 500ml of 100mg/l reacts, and test index is as follows:

Clearance (%): 93.2;

Adsorbance (mg/g): 61.7;

Clearance (repeating 6 times, %): 66.7;

Compression strength (N/): 25;

Rate of wear (%): 1.7;

Benzene absorption (%): 75.

Claims (2)

1. formaldehyde adsorbent and preparation method thereof, it is characterized in that, be made up of the raw material of following weight portion: calcium carbonate fiber 8-15, butyl titanate 20-40, Ludox 3-5, calcium aluminate 6-8, volcanic rock 60-80, PA6 nylon powder 6-9, gelatin 3-4, carbonic hydroammonium 1-3, epipremnum aureum ground-slag 10-15, coal-fired slag 5-8, deionized water are appropriate.

2. a kind of formaldehyde adsorbent and preparation method thereof according to claim 1, is characterized in that, be made up of following concrete steps:

(1) absolute ethyl alcohol of butyl titanate and 3-4 times amount is mixed, magnetic agitation 1h, magnetic agitation 2h is continued again by being added in above-mentioned solution after short for calcium carbonate fiber cutting, slow dropping deionized water, continue after gel to be formed to stir 0.5-1 hour, then to be added in baking oven that under 80 ° of C, to dry grinding for subsequent use;

(2) spend deionized water after volcanic rock being soaked 12h in concentrated sulfuric acid and grind to form fine powder to neutral oven dry, then mix with gelatin, PA6 nylon powder, in Muffle furnace, under 240-255 ° of C, calcine 0.5-1h, take out after cooling;

(3) by the product of step (1) gained and except calcium aluminate all the other remaining material mixing and stirring, employing pressure is that mixture is pressed into bead by the ball press of 10t-20t, selects particle size for subsequent use as ball core at the bead of 5-15mm scope after screening;

(4) product of step (2) gained and calcium aluminate are mixed, the bead of step (3) gained is placed in disc balling machine as kernel, add above-mentioned volcanic rock mixture, rolling pelletizing, volcanic rock is covered on ball core and forms shell, the composite sphere of gained is calcined under 550-600 ° of C 2-4h and become porous complex microsphere.